Bell-trap floor drain



`Oct. 9 1923.

1,469,790 v H. H.- HYsKQ BELL TRAP FLOOR DRAIN y\ Filed May 2, 1921 9nfl Patented Oct. 9., 1923.

UNITED STATES 1,469,790 PATENT OFFICE.v

HIPOLIT H. HYSKOfOF DETROIT, MICHIGAN.

BELLf'rRAP FLooR DRAIN.

of Michigan, have invented a new and useful Bell-Trap Floor Drain, ofwhich the following is a specification.

This invention relates to bell trap floor drains, and more particularlyto bell trap floor drains having check valves Ipreventing a back flowfrom the sewer into which the drain empties.

It is the object of the invention to provide a fitting of the typespecified that will afford easy access to the check valve so that thesame may be inspected and replaced when necessary without difiiculty.`

A further object of the inventionis to utilize certain standard parts inconstructing the improved fitting so as to minimize the preliminarymanufacturing expense.

In attaining these objects the invention contemplates arranging a checkvalve casing permanently below a fioor and in discharge connection witha drain pipe, and removably fitting in said Hoor a bell trap memberdetachably secured to said check valve casing` and having a suitablyperforated cover flush with the fioor, said trap seating upon said valvecasing andy discharging therethrough into the drain pipe.

A preferred embodiment of the invention is hereinafter disclosed and isillustrated in the accompanying drawing, wherein,

Fig. 1 is a view of the improved fitting in side elevation.

Fig. 2 is a vertical sectional view ofthe fitting showing the sameinstalled in a floor.

Fig. 3 is a plan view of the device.

ln these views the reference character 1 designates a Hoor formed ofconcrete or the like, and 2 is a drain pipe beneath said floor andopening in close proximity to the floor. Within the upper end of saidpipe there depends a cylindrical open-ended casing 3 for a ball valve 4,said casing having at its upper end a flange 5 engaging beneath thelfloor 1 and having one or more rods 6 dias metrically arranged withinits lower end to retain said ball Ivalve. Also to compensate, undernormal conditions, for restricting of the passage through said casing bythe ball valve., it is preferred to form a circumferentia-l series ofdischarge ports 7 in said casing. A bowl-shaped trap member 8 isremovably fitted in the floor 1, above the pipe 1921. seriai No.466,516.2.

2, and is formed with a marginal fiange 9 engaging the .floor Hush withthe surface thereof. Said bowl-shaped member is integrally formed with acentral tubular discharge outlet 10 projecting a considerable distanceupwardly into the bowl and extending downwardly a lesser distance. Thedepending portion ll of said outlet has a relatively thick wall and isexteriorly tapered to snugly engagea correspondin ly shaped seat 12formed within the upper end of the casing 3. Said depending portion isterminally formed with an interior flare, as indicated at 13, and as isshown in dash lines in IFig. 2. The flared surface 13 provides aseat'for the ball valve 4 when the latter is subjected to the pressureof a back iiow in the pipe 2.

The rim of the bowl member 8v forms a seat for a perforated drain plate14 to which is centrally secured within said bowl member, a bell-shapedguard or shield 15 which surrounds the intake end of the outlet 10,being spaced from the latter to form a restricted annular passage 16. Ahinged connection may be vformed between the plate 14 and bowl member 8,the drawing showing Such a connection established by a pair of curvedpins 17 secured to said plate adjacent the edge thereof and rejectingrdownwardly and laterally to loose y engage in apertures 18 in the topportion of the bowl member. Provision is also made by the invention fornormally 'lat'ching the plate 14 in its position of use, this provisioncomprising a leaf spring 19 exteriorly secured to the bowl member andprojecting upwardly within a housing 20 formed integrally with said bowlmember, a latch head 21 being carried by the upper end of said springand engaged normally in a depressed portion 22 formed in the plate 14diametrically opposite to the hinge 17. By slightly stressing the spring19 said latch head may be disengaged vfrom the drain plate 14,permitting the latter to be swung up to give access to the trap. Thetrap member is detachably secured upon the val-ve member by bolts 23which extend through the flange 9 of the fomer into engagement withscrewthreaded bosses 24 on the flange 5 of the latter member. lV'hen.

placementof the ball'valve may be accom- Leesgeo a water tight joint:

rEhe described construction is one that What I claim is:

be inexpensively manufactured easily installed.

A bell trap drain comprising a cylindrical casing anged tapered openingtherein,

at one end and having a a ball valve in said and casing, a dangedcylindrcaltrap member having a central depending portion taperedexteriorly for seating engagement with the btapered opening of saidcasing vand interiorly tapered for seating engagement with said ballvalve, and tie members interconnecting the Ranges of said valve case andtrap member for retaining said members engaged.

ln testimony whereof l sign this speciication.

Hrromr H. HYsKo.

